its HIFI TIDAL worth the money on? or just use spotify ?

well, i have been trying out TIDAL hifi i can say the music is clearer , but i just wanna know your thoughts on whether TIDAL HIFI is worth the money to spent it on.
also i am looking to get a good set on speakers for my PC any recommendation ?

Absolutely, I think Tidal HiFi worthes so much as it offers Hi-Fi quality with 44.1 kHz / 16 bit resolution. And I have found a great Tidal Music Converter for Mac that enables me to download Tidal music to my computer for offline listening without Premium and convert Tidal music to MP3, FLAC, WAV, AAC, etc. for better compatibility. So nice to meet Tidal music world.

I have both Tidal HiFi and Spotify family. My wife mostly uses Spotify and I primarily use Tidal HiFi. I enjoy the CD quality streaming quite a bit, and MQA is a nice perk if you have a renderer or decoder. I definitely think it's worth the cost and is a nice option in the marketplace.
... And yes, I can tell the difference between 320Kbs lossy and 1411Kbps lossless.

I love Tidal, lossless is the way to go if your equipment is up to it. Plus, Tidal supposedly pays a higher royalty to the artists than their competitors do, well worth the cost for that alone. Looking to get an MQA capable DAC like the IFI Nano Black to decode Master qaulity files on Tidal for an even better sound quality. Right now I upsample Tidal to 192k via the excellent Teac UD-501 DAC.

Go buy CD's from pawnshops at $3 a pop and convert to flac.
A good pawn shop will even have newer stuff from say about a month or two behind the release....
If you are dirty you can actually turn around and flip the cds on ebay...not something i would do as its just not worth the effort for me but i know people who do this...and yes, they are dirty people imo. Lol

Either settle for 320kbps (not that bad)
Or get a local FLAC library.
Tidal is NOT worth it
You could also just buy CDs of music you want and then convert them to FLAC
it's much cheaper than purchasing digitally, and then you've also got a physical backup

To focus on your initial question, here's my 2 cents; (BTDT)
Tidal is not worth it, because for my needs, the App, the songs available and the monthly fee are less interesting than Spotify and Soundcloud combined. (I know that these are not perfect sources)
Because I'm listening to music everywhere, from places where I have access to Hi-End audio, others where the setup is totally crappy, subscribing to Tidal which would cost me more monthly than Soundcloud and Spotify Family combined, is ridiculous for the little (NOT OPTIMAL) gain I would get by subscribing to Tidal.
As @Heefty mentioned, if you particularly digg an album or a song, there's nothing like the original source, when you have a proper audio setup to make it shine to its true potential.
If your use case is that you have a Hi-Fi phone/protable dac with good travel headphones and want very good sounding music on the go + discover during travel without the hassle of downloading FLACS for everything, Tidal is worth it (not perfect). But hey, this is a pretty specific use case, which I doubt is yours.
If you want to get the most of your audio setup, original sources like CDs, Vinyl and FLAC would deliver. So any streaming service wouldn't do it. When you try the real thing for a bit, listening to streaming service is a totally different experience: Sometime it's completely disturbing and I dislike it, sometime it's interesting to the point I digg it.
For example, the song Melting Pot from Booker T. & the M.G.'s sounds amazing from its original source with a good audio setup, but when I streamed it from Spotify to low-end box speakers, the bass started slamming through the loose wooden floor they were standing on and the whole room started to groove with it and totally complement this song. The room accoustic which was far from optimal, transformed the original song to the point where I prefered it like than its "HI-FI audio setup" version.
So in the end, it's not a matter of source nor audio setup to enjoy a song, in the right conditions, all streaming services can be enjoyed, sometimes it could be perfect for your needs.
Hi-Fi is nice when you have everything into place to get the perfect experience, but having Hi-Fi speakers without room accoustic, man, you're wasting time and money IMHO. Headphones are the cheapest way to get into Hi-Fi, but you'll have to hack your way in to have the full experience.
If you want something nice for a better experience with the HE400i you're planning to buy, get yourself a sub woofer with these, you'll thank me later ;-)

Agree with this. I really want Tidal to be the best one-stop-shop for all our HiFi needs on the go, but it just isn't. For the music that really matters, FLAC direct is the way to go. Or, I don't believe that Google Music compresses your FLAC uploads, so that might be a good option.

Tidal hi-fi is outstanding.
I'm no audiophile but I have some pretty nice earphones and headphones and a JDS The Element DAC.
My iTunes music sounds ghetto in comparison to Tidal tracks.
I play my iTunes through JRiver and that really cleans it up and gives it punch.
You need good gear though.

My primary source is Spotify on an Android phone. After testing my new DAC/AMP with a Chromecast I brought it to work to use with my phone and discovered the amazing sound I had heard was now just OK. I'm considering jumping to Tidal because they support bypassing Android's crap audio sampling (through UAPP), and Spotify doesn't (and doesn't seem to care to for some crazy reason).
Long winded way of saying I am also considering Tidal, and there is compelling reason to if your phone is a source for you. I'm already entrenched in Spotify, so just trying to evaluate my options before making the leap.

So I'm still on my 90 days free and I like it. I have not experienced any buffering issues yet. I currently live outside of the US and its only $10 per month. Is that what it cost or are people in the US paying $20?

Tidal sounds good, but I can't stand their app, all the notifications for Jay Z content, and occasional skipping that sounds like a scratched cd. I also don't like the way the library is organized. I paid for 6 months, but I'm back to Spotify when it's up.

Definitely good points. My test was is bit more direct although I didn't completely spell it out. I'm suggesting that someone with the question the OP brought up take their favorite track on CD and A/B compare. Get that track that you've listened to 1k times on repeat on CD pulled up on Spotify and see if you can tell the difference. That will help you quantify the value of the lossless audio quality.
I do take my time to critically listen and find out what a track is supposed to sound like and rather enjoy the hobby when I have time for it. That being said, I spend probably 80% of my listening time on Spotify extreme. When I find an album or artist that I thoroughly enjoy there, its lossless time. I know they don't make money on Spotify, so I feel obligated to contribute by purchasing an album or two from them via hdtracks or buying spinning plastic. Then I get to do the critical listening on it and I can't listen to it on Spotify anymore because so much is missing. When I'm just drive-by hearing though, 320kbps is satisfactory for me.
I completely agree on the statement about the supposed GIGANTIC leaps in quality going from lossless to lossy amongst the elitist audiophiles of the world. Until I've really been able to put in the leg work on an album, Spotify is just fine and not missing so much that it completely loses all value imo. I suppose that's where I'm more of a music lover than an audiophile though.

I did a trial a few year's ago when my HT and PC were in the same setup and enjoyed the product. I just recently did a trial again and find it unusable due to connection drop out's, I have a 200m connection so it shouldn't be that. I recently found bandcamp.com and figure I'd prefer to spend that money on high quality flac files that I can archive over a subscription service. If I don't need the highest quality source I go with pandora, when I want a dedicated listening session I go with FLAC files.

I have Spotify premium. They have some Hi-res. I tried Tidal, and it was good. However, the $25 wasn't justifiable. I think Tidal will have to come down to remain competitive. Spotify is good for me, but this is just my opinion. I'm a musician, so having most music easily accessed, is invaluable.

Wait... spotify is using high res now...need to check this out so I can quit giving HDtracks my money! Tidals offering was lacking compared to spotify several years back.... The increase in fidelity was not enough for me. A smaller library and lack of app support on various electronics steered me away from Tidal

Can you tell the difference between 320 (assuming you're comparing it to spotify premium) MP3 and FLAC? Do you listen to enough music to justify that difference in quality as well as in price?
Those are the only two questions you need to answer.

I listen to a fair amount of music, just that I am planing to buy an hi fi open back headphones.
And my thinking was if I am doing to buy expensive headphones do I need. Flac to get the full use/experience/potential of the headphones I'm doing to buy or I just stick to 320kbps files